---
title: postgres_listener
sidebarTitle: postgres_listener
---

# `prefect.server.utilities.postgres_listener`

## Functions

### `get_pg_notify_connection` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/server/utilities/postgres_listener.py#L19" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_pg_notify_connection() -> Connection | None
```


Establishes and returns a raw asyncpg connection for LISTEN/NOTIFY.
Returns None if not a PostgreSQL connection URL.


### `pg_listen` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/server/utilities/postgres_listener.py#L91" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
pg_listen(connection: Connection, channel_name: str, heartbeat_interval: float = 5.0) -> AsyncGenerator[str, None]
```


Listens to a specific Postgres channel and yields payloads.
Manages adding and removing the listener on the given connection.

